package com.hyl.config.redis;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;

/**
 * redis配置类
 */
@Configuration
public class RedisConfig {
	//缓存过期时间
	@Value("${spring.redis.expire}")
	private Long expire;

	@Bean
	public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
		RedisTemplate<String, Object> template = new RedisTemplate<String,
				Object>();
		// 配置连接工厂
		template.setConnectionFactory(factory);
		//使用Jackson2JsonRedisSerialize 替换默认序列化(默认采用的是JDK序列化)
		Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new
				Jackson2JsonRedisSerializer(Object.class);
		//解决查询缓存转换异常的问题
		ObjectMapper om = new ObjectMapper();
		//设置在生成 json 串时，对象中的成员的可见性
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		//存储到redis的json将是有类型的数据
		//指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
		om.activateDefaultTyping(om.getPolymorphicTypeValidator(),
				ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		StringRedisSerializer stringRedisSerializer = new
				StringRedisSerializer();
		// key采用String的序列化方式
		template.setKeySerializer(stringRedisSerializer);
		// hash的key也采用String的序列化方式
		template.setHashKeySerializer(stringRedisSerializer);
		// value序列化方式采用jackson
		template.setValueSerializer(jackson2JsonRedisSerializer);
		// hash的value序列化方式采用jackson
		template.setHashValueSerializer(jackson2JsonRedisSerializer);
		template.afterPropertiesSet();
		return template;
	}

	//@Cacheable注解字符集编码配置
	@Bean
	public RedisCacheManager cacheManager(RedisConnectionFactory factory) {
		RedisCacheConfiguration config =
				RedisCacheConfiguration.defaultCacheConfig();
		config.entryTtl(Duration.ofMinutes(expire))//缓存过期时间
				.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.string()))
				.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(RedisSerializer.json()));
		return RedisCacheManager
				.builder(factory)
				.cacheDefaults(config)
				.build();
	}
}

